<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>搜索B站视频</title>
</head>
<body>
    <h3 style="color: white" >
    添加大标题颜色
</h3>
<form action="https://search.bilibili.com/all" method="get">
<input name="keyword" autofocus autocomplete="off"
placeholder="请输入关键字"
type="search">
<input type="submit" value="搜索">
</form>
</body>
</html>